I need to know what my collection is worth

I have a small collection of kodak cameras,and I would like to know where I can find some info on what I have.

here are some of what I have.

Duaflex,2,3 and 4(brown)

Starmite 2 (in box with flash bulbs)

Baby Brownie Special

Holiday Flash (in Box)

Bull's-eye

Brownie Twin 20

Brownie Hawkeye

Auto 27

Brownie Movie Camera f/1.9 f/2.3 8mm (in box)

I also have the flash add-ons for most of them.

I started collecting these when I was maybe 10 years old.

Any info would be great.

Thank you.